evensen



W. M. EVENSEN.

SAM.

APPLICATION FILED JULY 26. I917.

1,306,419. Patented June 10, 1919.

2 SHEETS-SHEET lw. M. EVENSEN.

Patented June 10, 1919.

2 SHE ET8-SHEET 2.

V UNITED STATES PATENT OFFEQE.

WILLIAM 1vI. vENsEN, or CHICAGO, ILLINoIs, AssIeNoR r0 Goss PR NTINGrRnss 1 COMPANY, A CORPORATION OF ILLINOIS.

CAM.

Specification of Letters Patent. Patented June 10, 1919.

Original application filed. May 16, 1916, Serial No. 97,793. Divided andthis application filed. July 26, 1917.

. Serial No. 182,829.

To all whom z't may concern: Be it known that I, VVILLIAM M. EvnNsEN, acitizen of the-United States, residing at Chicago, county of Cook, andState of Illinois, have invented certain new and useful ImprovementsinCams, of which the following isa specification.

The invention relates to a cam for giving a variablelthrow or travel tothe actuated or driven part or mechanism, and. to such a cam havingmeans or capabilities for very nice and reliable adjustment of the kinddescribed.

Objects of the invention will beset forth hereinafter in part, and inpart will be obvious herefrom, saidobjects being attained through themeans and combinations pointed I out in the accompanying claims.

This application is a dlvislon of applicationSer. No. 97,793, filed May16, 1916.

.The invention consists in thenovel parts, constructions, arrangements,combinations and improvements herein shown and described. n

The accompanying drawings, referred to herein and forming a part hereof,illustrate one embodiment of the invention, the same serving inconnection with the description herein to explain the principles of theinvention.

Of the drawings Figure 1 is a fragmentary elevation of a portion ofaprinting press, with parts omitted, said figure showing a mechanismconstructed in accordance with theprinciples of the invention; t

Fig. 2 is a fragmentary View of the cam 1 and connections looking atFig. 1 from the right; I Fig. 3 is a detail edge View, on an enlargedscale, of the cam for operating the vibratingfeed roller; 7

Fig. 4 is a face view, also on an enlarged scale of the cam, looking atFig.3 from the left; a

Fig. 5 is a face view of the camhub,

likewise on an enlarged scale;

. Fig. 6 is a face view of. the cam;

-Fig. 7 is an edge view of the cam looking at Fig. 6 from the right; and

Fig.8 is a horizontal central section on the line A E of Fig. 4.

In the parent application filer. its, 97 5? 93,

hereinbeforc referred to, the preferred embodiment of the cam wasillustrated and described as a part ofthe inking mechanism of a printingpress, and in the present exemplification the same application of thecam is preserved, although it will be understood that the cam is usefulin other connections and for other purposes.

Referring by way of example to the accompanying drawing, as anexemplification ofone application or use of the cam, an ink fountain isrepresented by numeral 1, and the fountain roller therewithinby 2. Theink drum 3. cooperates with the usual distributing or vibrating rollers(not shown), and these distributing rollers in turn cooperate with andink the form rollers, which latter ink the forms upon the cylinders in a,well-knownmanner.

I The ink feeding roller 4 swings to and fro between the fountain roller2 and the ink drum 3, conveying periodically a small quantity of inkfrom the fountain roll to the ink drum, the ink being carried forwardfrom thelatter to the form rollers in the manner and by the mechanismbriefly indicated above. The fountain roll 2 is intermittently rotatedfor a short distance from time to time in the usual manner. The roller 4is supported by its pintles 5 in notches or recesses in the upper end ofarms 6, the roller 4 being held in position by latches 7 which latchesare mounted on the arms 6, and engage the pintles 5 of the roller 4. Theroller-carrying arms 6 are located within the press frame 8, and arefixed to a rock shaft 9, which shaft is journaled transversely in thepress frame (only one of the arms 6-and one end of the roller 4 beingshown in the drawings).

1 The actuating means for the ink feeding roller 3 comprises meansincluded in the connections between the roller and itscam for varyingthe angular relation in either direction of the roller with respect tothe cam, thereby regulating and changing as desired the length of travelof the ink-feeding roller in either direction. In the embodied form ofsuch means, the arms 6 are fixed to the shaft 9 in a' suitable mannerpreferably adjustably bymeans of set or clamping screws 10. The end ofthe rock shaft 9; extends outside as press frame 8,

and from such'outside end of the shaft 9 ex tends a lever arm 11, whichis fixed to the shaft in ,a suitable manner, as by a key or feather 12.The outer endofl'ei er 11 has formed therein an elongated slot 13 and atcal pinQO, the iiiiie'r en'd ofthe screws 16 and 17 eiigaging with thepin '20 on opposite sides' thereof; By turning screii s an'd thetray'elof theiiik-feedingroll be lei'i' the ned or shortened towardeithr thefountain roll or theiiifl: dru1i1,the liec tire length of the rod'b'eingthe setting of the screws to e'fiect thi'sresiflt; The pin 20 isattached to the upper end 7 Qfjt rod 21*, said fed at upper end hayingan enlarged circular head 22 w th aface P i the 'slfatft and aemprepe'r; 'pte ferab'y en foiifitain rolle bearing against a coi respoiding face upon the head or end of the le've'rarin 11. The rod 21, atit'slower end, is' formedas ayoke 23, straddling a shaft 24;, which shaftiscai' ried in suitable bearings 25 uponthe n 1a-, chine frame. The yokecarries af c'amlroll 26, said cam roll engaging the rind or peripheryofa cam 27, whichis fixed to and rotates withthe shaft 24'. lUpon theopposite side ofthe yoke 23 a collar 28", encirf cling the shaft24,a'1id humane the ye e in position withth'e cain roll 26 engagil'igthe can; The shaft 25is a. suitable manner, as by beveled gears 29, fromthe Shaft 30. It will be s'eerr that by tprningthe screws and 17, theangular relation in either direction ofthe arm 11 to the rod 21 and [tothe ca n 2 7 may be determin'edand regulated as desired.

accordance with cei'tain features of the H.,=,,:.,/ m 1 1'. v yinvention, means are provided for vary ng the diain'etral relation ofthjjeq 27 and its and also for positioning the ea'ni angularly up'o'nifts shaft. Byth'ese yarioifs means, the extent and locatioii of thepath oftravel of the oscillating ink 'feeding roller may be Varied anddetermined, the amount or degree of contactand piressure b'etweeii theink feeding roller and the ink fountain rollerjand between the inkfeeding roller and theifik' drum be niicely acclir'a'tely niaihtaiiiedand regulated despite l fit q s n w S z f. fi j nk f ili roller, and atthe same time the ink X feeding roller is under 'co'n'trol throilghoutits entire f li if fl a H y ,Pml nlin'g s m.- Ilfil'l [if the supplyingl oller against the "fr the ink drum. 7

ed form of the th ere 'i's totanjd' with circling the sl'iaft.andIprovidihg bearing or contacting surface all the way around itsperiphery, thereby keeping the oscillating ink feeding ro llerain'deicontrol atall times, the being diametrally Variable or positionablerelatively to the hub and to its shaft. In such embodied form, the hub-35 has a central opening 36 through which passes the shaft 24. The hubis held iiifi'Xed l'ai'ly-adjustable about itsshaft by suitable means,such as clamping or binding screws threading into the-raaiaiiy armngedaper uiidereut part, arranged centrally across the hexieled so tofitsnugl'y and to be Held by and toslide within the'ui'fdercutedges 40'and 41 of the hub, as shown'best in Fig;

Thec'ain has its internal aperture 48' co n-V siderably larger thanthei'ntrnal' aperture 7 8'6 of the hill) and likewise considerablylarger thanthe di'aifiet'ei o'f the shaft 24. Thus the cam may *s'lidealong the face of the hub, changing the diam'etral relation there (if,the relati'o'nof the centers of the and its shaft respect toeach" V ithq r a rs are Proyided the mvent enf r accurately and nieely-var lng anddaerm' ing the relation of the cam to its shaftgaifd in the embodiedform uii-eefyat pin 53 is fixed in the ca 'n 27 and pro1ects from theinner face thereof lnto anoperim'g 54, of

larger size, formed in or assing through V the hub 35. The 'jbiri' 53 inits projecting portion, has formed therethroi'ighran ir'iter-- nallythreaded 'o'jiei'iing lnthis'i'n tern'ally threaded opening 55 engages asci-aw 5'6,-

which screw has a head 57 within a radially dispb se d cyli'fidri'cztldpi'liiig "58 in the hub 35. The screw 56 is held in stationarypo'sition longitudinally with respect to the-Hub 35, being re to rotate,afid sho fwn piiis 6'0 and 61 are drii en i'espedtiyelythrough holes,passing through the lli'ib either eat at the *eyi'i aacu Opefimg 58,,said pins rejecting for substantially Half their diameters into:rou'ifded. aniiulfar gretve 63 ter ed in tIiehead 57 of the screw 5 6.The is tii'riiedin asuitable' manner; and fire feral) y afi gtila ilyshaped recess form in'tlie' tap "(if the head? When the screW 56 isturned, it is free to rotate with respect to the hub 35, but islongitudinally fixed relatively to the hub. As the screw 56 is rotated,by reason of its threaded engagement with the pin 53, the cam proper ismoved in the guideway on the face of the hub either to the right or theleft in Fig. 8. The central opening of the cam being larger than theshaft 24, and the opening 54 in the hub being larger than the pin 53,the cam can slide upon the hub and be accurately positioned by thescrew, While the cam is held to the hub by the dovetail connection.

It will thus be seen that the cam has a very wide range of regulation oradjustability with the utmost degree of exactness and nicety, and at.the same time the parts are held accurately and fixedly in position, andthat the throw of the cam may be varied as desired, the cam roll on therod at all times being permitted to follow the periphery of the cam andthus keep the movement I .of the oscillating ink feeding roll underabsolute control, and nicely regulating and determining its traveltoward and its contact with both the fountain roll and the ink drum.

There is thus provided by the invention a cam actuated and governedmechanism for continuously controlling the movement of the fountain feedroller lever on this type of press, and at the same time giving avariable throw or length of travel to the feed roller, so that the throwcan be increased 0r decreased as the composition roller varies indiameter, thereby maintaining at all times the desired impingementagainst the fountain roller, and also the desired impingement againstthe ink drum.

By the screw regulation at the end of rod 21 the location of the ends ofthe path of travel of the ink feeding roller 3 may be changed anddetermined, and thereby the degree of contact of the roller 3 With boththe ink drum and the fountain roll is controlled despite variations inthe size of the ink feeding roller. By the positioning or adjustment ofthe cam upon its shaft the total extent of the path of travel of the inkCopies of this patent may be obtained for five cents each, by addressingthe feeding roller may be varied, regulated and determined, therebycompensating for variations'in the size of the ink feeding roller. Thecam roller is designed to follow the cam at all times to continuouslycontrol the ink feeding roller and to prevent slamming and loose motionthereof, and by changing the diametral relation of the cam and its shaftthe low and high parts of the cam are varied together to maintain thisrelation while at the same time securing proper regulation of thelocation and extent of the path of travel or oscillation of the inkfeeding roller.

From all the foregoing it will be understood that a mechanism has beensupplied realizing the objects and advantages herein set forth, togetherwith other objects and advantages. It will be further understood thatchanges may be made from the precise con struction shown and described,without departing from the principles of the invention and withoutsacrificing its chief advantages. That I claim as my invention anddesire to secure by Letters Patent is 1. A cam mechanism including incombination a shaft, a hub, mounted upon and rotating with the shaft andhaving a guideway formed in ,,its flat side, a cammember embracing theshaft and movable along said guideway to vary its diametral relation tothe shaft, said cam member having a screw-threaded hole therein, and arotatable screw mounted against longitudinal movement on the hub andthreaded into said screw-threaded hole.

. 2. A cam including in combination a shaft, a hub, mounted upon androtating with the shaft and having a guideway formed in its flat side, acam member embracing the shaft and movable along said guideway to varyits diametral relation to the shaft, there being a recess in the hub anda part prQJecting from the cam member into the recess and having ascrew-threaded hole therein, and a screw mounted in the hubagainstlongitudinal movement and threaded into the hole in said part projectingfrom the cam member. In testimony whereof, I have signed my name to thisspecification.

WILLIAM M. EVEN'SEN.

Commissioner of Patents,

Washington, D. G.

